From birth until baby shows signs of trying to roll over. "SWADDLE UP is specifically designed to let your baby sleep in a natural ARMS UP position. This allows them to bring their hands to mouth for self-soothing during sleep time, resulting in more sleep for everyone."
Size:
Newborn: 2.2-3.8 kg/5-8.5 lbs.
Small: 3.2-6 kg/7-13 lbs.
Medium: 6-8.5 kg/13-18.5 lbs.
Large: 8.5-11kg/18.5-24 lbs.
Always use according to baby's weight not age.
